Examples of 'nepheline' in a sentence
Meaning of "nepheline"
nepheline (noun): A mineral commonly found in igneous rocks and used in the production of ceramics and glass. It typically occurs in small, gray, glassy crystals
Show more definitions
- A feldspathoid mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, nepheline is a plagioclase feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, nepheline weathers rapidly and can only be seen as inclusions in freshly broken rock.
How to use "nepheline" in a sentence
Basic
Advanced
nepheline
Useful nepheline syenites are typically nodular particles.
This mineral is more resistant than nepheline.
Macroscopic aspects of nepheline syenite are similar to those of granite.
Its intrusive equivalent is nepheline syenite.
It is called nepheline syenite gneiss or litchfieldite.
Extraction of the industrial minerals nepheline syenite and olivine.
Nepheline and nepheline syenite are sodium potassium aluminosilicates.
From the nepheline syenite.
Nepheline is the main feldspathoid.
It is also common in nepheline syenites.
It occurs in nepheline syenite intrusives and in nepheline syenite pegmatites.
Ijolite is an igneous rock consisting essentially of nepheline and augite.
Nepheline and nepheline syenite.
It also occurs as a hydrothermal alteration product of corundum and nepheline.
Nepheline generally shows partial alteration into natrolite and cancrinite.
See also
Loparite occurs as a primary phase in nepheline syenite intrusios and pegmatites.
Nepheline is very sensitive to weathering and is altered to natrolita and cancrinite.
Enterprises excavating the industrial minerals nepheline cyenite and olivine.
The presence of nepheline and absence of quartz are the fundamental difference.
It consists almost entirely of alkaline rocks including sodalite and nepheline syenite.
Small amounts of nepheline may be present and apatite is a common accessory mineral.
It occurs in hornfels and siliceous marble xenoliths within and adjacent to a nepheline syenite intrusion.
The selective elimination of nepheline and alkaline feldspar is named mineral dissociation.
Nepheline syenite can be used to partly or wholly replace the calcium carbonate.
The similar rock without quartz and nepheline is denominated alkaline syenite or syenite.
Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar.
Connected with the borolanite there are other types of nepheline syenite and pegmatite.
The mineral occurs in nepheline syenite pegmatites and granite and aplite greisens.
On Alluaiv it occurs in pegmatitic veins in nepheline syenite.
The property comprises a nepheline syenite dyke exhibiting pegmatitic texture that stretches more than three kilometers.
On the southern part of the island there is a large nepheline syenite mine at Lillebukt.
Leucite, nepheline and nepheline syenite waste.
It is essentially a microcline, sodalite and cancrinite variety of nepheline syenite.
Alkali basalt may contain minor nepheline and does contain nepheline in its CIPW normative mineralogy.
Wherever they occur they accompany leucite - and nepheline syenites.
As a result of this process, the nepheline or nepheline syenite forms a glassy surface.
Lithium is the very important component of granites, syenites and nepheline syenites.
Commonly occurs in alkalic igneous rocks, nepheline syenites, carbonatites and pegmatites.
The pyroxene is morphic, yellow or green, and is surrounded by formless areas of nepheline.
Sodalite or hauyne may also be present, but nepheline is typically absent.
Nepheline syenites are silica-undersaturated and some are peralkaline terms discussed in igneous rock.
Because of the presence of feldspathoids, nepheline syenite is classified to be a typical alkaline rock.
The mountain has an interesting mineralogy, notable for its composition of nepheline syenite.
For this reason, a clear crystal of nepheline becomes cloudy when immersed in acid.
G ground nepheline syenite is added, homogenized and degassed, and the volatile constituents are removed.
The second component is selected from feldspars, nephelines and nepheline syenites, or mixtures thereof.
After the nepheline alteration products are leached, small holes are formed on the rock.
The main intrusive rocks range from gabbros to ferroaugite syenites, nepheline syenites, and quartz syenites.
On the other hand, nepheline syenite gneiss contains abundant and large zircon crystals.
A method as in claim 13, wherein the feldspathic mineral is nepheline syenite.
